Antonio Castro
type: MusicGroup
popularity: 13
followers: 254
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7ef6c376bc425df75f846a11bf806768503de0c3728328f43075ad4c88c37d3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/35de9c69-9efd-424b-b0d6-56b1a6f84316.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/35de9c69-9efd-424b-b0d6-56b1a6f84316.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/35de9c69-9efd-424b-b0d6-56b1a6f84316
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa7ef6c376bc425df75f846a11bf806768503de0c3728328f43075ad4c88c37d3","name":"Antonio Castro","registered_at":"2026-06-14T10:07:21Z","symbol":"NIM0419352","token_address":"0xc43e813e2840b2f5888614bb48591b9cdfff9946","type":"artist","uuid":"35de9c69-9efd-424b-b0d6-56b1a6f84316"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef6c376bc425df75f846a11bf806768503de0c3728328f43075ad4c88c37d3. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35de9c69-9efd-424b-b0d6-56b1a6f84316.json and https://artists.proofprofile.net/proofs/artist/35de9c69-9efd-424b-b0d6-56b1a6f84316.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T13:03:42Z
  text: {"copyright_id":"0xa7ef6c376bc425df75f846a11bf806768503de0c3728328f43075ad4c88c37d3","name":"Antonio Castro","registered_at":"2026-06-14T10:07:21Z","symbol":"NIM0419352","token_address":"0xc43e813e2840b2f5888614bb48591b9cdfff9946","type":"artist","uuid":"35de9c69-9efd-424b-b0d6-56b1a6f84316"}
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  type: MusicAlbum
  date published: 2016-08-26
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  type: MusicAlbum
  date published: 2017-03-25
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  type: MusicAlbum
  date published: 2018-02-28
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  type: MusicAlbum
  date published: 2019-12-15
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  type: MusicAlbum
  date published: 2020-12-23
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  date published: 2023-10-10
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  type: MusicAlbum
  date published: 2023-11-18
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  type: MusicAlbum
  date published: 2023-12-08
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  type: MusicAlbum
  date published: 2023-12-21
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  type: MusicAlbum
  date published: 2024-08-30
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  type: MusicAlbum
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  type: MusicAlbum
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